DS2 (3.9) has been dry for 6 weeks but not clean. The good news is that he saves his poos for home.
Today I bought some sweeties he's never had before, put them on a high shelf, put the potty underneath, and told him that "if you do a poo on the potty, then you can have a sweetie".
Now six months ago he would have only understood "have sweeties", reached for the sweeties and been genuinely distraught when I then refused them.
And three months ago he would have followed "first....then...." at nursery but not at home.
Today he quickly sat down on the potty and pushed. The poo was not ready (anyone else talk like this?) but he sat down and he pushed.
Half an hour later he pooed in his pants again
But somehow that reaction to my instructions - I felt like a whole new world of verbal communication was opening up for us.
The SALT and I were both similarly cheered when she visited a few weeks ago and he came downstairs saying "mummy, I put poo in my pants!". I'll take my first person pronoun use wherever I can find it.